Acceleration statistics in thermally driven superfluid turbulence.

Acceleration statistics in thermally driven superfluid turbulence.
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热驱动超流体湍流中的加速度统计。

DOI:
10.1103/physreve.89.033006
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发表时间:
2014
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
通讯作者:
Baggaley AW
Baggaley AW
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--
文献类型:
--
作者:
Baggaley AW

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绝对零度附近流动可视化的新方法开辟了直接比较量子湍流(在超流氦中)和经典湍流(在普通流体中,如空气或水)并探索相似和差异的方法。我们给出了数值模拟的结果,其中我们检查了热逆流中超流体加速的统计特性。我们发现,与速度不同,加速度服从类似于经典湍流的标度定律,这与La Mantiaet等人最近的量子湍流实验是一致的。
New methods of flow visualization near absolute zero have opened the way to directly compare quantum turbulence (in superfluid helium) to classical turbulence (in ordinary fluids such as air or water) and explore analogies and differences. We present results of numerical simulations in which we examine the statistics of the superfluid acceleration in thermal counterflow. We find that, unlike the velocity, the acceleration obeys scaling laws similar to classical turbulence, in agreement with a recent quantum turbulence experiment of La Mantiaet al.
DOI: --
发表时间: 2011
期刊: --
影响因子: --
作者:
M. Rosseinsky
通讯作者: M. Rosseinsky